Royal Dairy Royal City, Washington, USA
The Problem

Royal Dairy is a large dairy built in 2001 with 5,000 milking cows. The Allred family strives to be progressive in every area of operation and have successfully positioned Royal Dairy as a leader in sustainability in Washington State. On the search for processes that can improve sustainability, Royal Dairy sought technologies that are more effective in capitalizing upon the essential nutrients of dairy flush effluent to convert waste into a beneficial byproduct. 


The BioFiltro Solution



Royal Dairy executed a phased implementation in which BioFiltro first designed and installed a 5,000 GPD system to enable the client to test not only its performance with their lagoon water, but also system viability for the cold winter. After two years of operation, the pilot has averaged 93% removal of Total Nitrogen, 97% removal of Total Suspended Solids, and 90% removal of Total Phosphorus. 

In August 2017, BioFiltro and Austin Allred commissioned what is, to date, the largest BIDA® System in the United States. The 200,000 GPD facility treats dairy flush from approximately 5,000 milk cows, enabling Austin and his dairy to exceed nutrient management goals.

Learn more about Royal Dairy here

The Results

On May 16, 2018, Austin Allred, owner of Royal Dairy in Royal City, WA, received the 2018 Outstanding Dairy Farm Sustainability Award winner at the seventh annual Innovation Center for U.S. Dairy Awards. Allred, 28, was recognized for his commitment of turning his Royal City, WA dairy into a zero-waste business with the BIDA® System. 



  • 97%
    Average Total Suspend Solids Removal
  • 29°F
    Average Exterior Winter Temperature
  • 93%
    Average Total Nitrogen Removal
This is the first system that we found that could provide an economical and efficient solution capable of cleaning our green water. The simplicity of using worms and biology is brilliant.
Austin Allred, Owner, Royal Dairy